It's possible to hear radio signals in your AC ducts

Is it possible for air-conditioning ducts in a house to pick up radio transmissions? Sometimes, it seems like I can faintly hear voices, but I don't know if that's my ears playing tricks on me.

Apparently, such a thing does sometimes happen, although I have to admit I don't understand it very well.

There seem to be two types of ducts involved here. Atmospheric ducts develop way high up in the sky when a layer of warm air sits over cooler air. This duct allows some radio waves to travel farther than they normally would.

However, under certain weather conditions, the cool air in your AC ducts can set up that kind of inversion, which allows the duct to transmit some signals.

It's sort of like those stories you hear sometimes about people whose fillings pick up radio broadcasts. Can you imagine? What if your teeth picked up talk radio? Life would hardly be worth living.

Anyway, I'll keep working on this one, which means I'll wait for one of you smart people out there to explain it to me in words of few syllables.

What causes eye boogers?

There is a more scientific name for eye booger, but I bet it's hard to spell, so I will just stick with boogers, sleepy dust, eye goop and so forth.

Your eyes are lined with a sort of thin mucus stuff called rheum.

Little bits of this stuff, called goblets, patrol your eyeballs on the lookout for bacteria or specks of dust or some other small foreign objects. When they find something, they glom on to it and discharge it either into your nose or out through your tear ducts.

And when it hits your rosy red cheeks, it dries up, and you wake up with a bunch of crusty eye boogers.